Helmholtz, H. v., & Atkinson, E. (1958). Popular Lectures on Scientific Subjects: By Hermann von Helmholtz. Transl. by E. Atkinson (New ed.). Longmans, Green, and Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHelmholtz, Hermann von, और Edmund Atkinson. Popular Lectures on Scientific Subjects: By Hermann Von Helmholtz. Transl. by E. Atkinson. New ed. London: Longmans, Green, and Co., 1958.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHelmholtz, Hermann von, और Edmund Atkinson. Popular Lectures on Scientific Subjects: By Hermann Von Helmholtz. Transl. by E. Atkinson. New ed. Longmans, Green, and Co., 1958.
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